1st Popup Killer & IE Assistant   
http://www.zs2002.com

1st Popup Killer & IE Assistant is a light-weight plug-in for Internet Explorer. With special filter engine, 1st Popup Killer & IE Assistant intelligently kills advertising popup windows, block macromedia flash. It may automatically refresh your favorite web page at any predefined intervals. The pop-up blocking function can be temporarily disabled by holding down the CTRL key. Residing on the IE toolbar with an icon button, this utility is small and easy to use, never interferes with normal browsing and slows your browser.

MailBee.NET Objects   
http://www.afterlogic.com

MailBee.NET Objects is a set of powerful and robust .NET components for composing, sending, accessing and parsing mail on SMTP, POP3, and IMAP4 servers. Written in 100% managed C# code, MailBee.NET Objects can be used in desktop, console, and ASP.NET applications developed in C#/VB.NET/etc. The key features of the components: quick methods for sending and receiving mail with a single line of code; POP3, IMAP4, and SMTP PIPELINING; secure TLS/SSL connections; accurate and flexible MIME parser; MS-TNEF (winmail.dat) attachments support; compose/view/preprocess HTML mails with embedded pictures; HTML-to-PlainText conversion and vice versa; mail merge, ESMTP, send without SMTP server, send a web page, send to IIS SMTP queue, Delivery Status Notifications; secure and user-defined authentication (including NTLM and POP-before-SMTP); Windows Integrated Authentication (authenticate using the current Windows user credentials); TO/CC/BCC, international charsets, custom headers, custom message formats (such as meeting request items); multiple attachments, file and memory attachments, access to every MIME part; XML, streams, backup SMTP and DNS servers, multi-threading, asynchronous methods; a lot of unique features like moving messages between folders in IMAP; rich set of events and error handling features, memory and file logging, and much more; documentation is available in CHM, VS.NET 2003, and VS.NET 2005 formats; royalty-free distribution.

Check Mail (POP)   
http://www.e-eeasy.com

Lightweight customisable new mail notification utility for any POP account. Capable of launching your mail client or a web page of your choosing. Change the alert sound, display a notification box or even customise the icons. Works with SSL so you can use it to notify of new mail into your GMail account. Very easy to setup and use.

Eclarsys PopGrabber   
http://www.eclarsys.com

Eclarsys PopGrabber is a simple program which retrieves Emails from POP3 accounts and forwards them to any SMTP Server. COMPLETELY FREE 3 ACCOUNT VERSION available for download! Works a a Windows service. Small .Net based program. Please note: Current version does not support SSL connections, SMTP authentication or catch-all mailboxes (each POP3 account is forwarded to a single SMTP account). These features are planned for the next release.

StopPop.net   
http://www.tometasoftware.com

StopPop.net automatically blocks Internet Explorer popup windows while you surf. A small, effective, and smart anti-popup software product than can kill annoying pop-up windows without your intervention by using artificial intelligence and intelligent agent technologies. Users are raving about how this is exactly what a popup blocker should be. It is so simple your Grandmother will understand how to use it. The interface is so unique and intuitive you'll wish you had been using it all along. Highlighted Features in StopPop.net * Allow pop up windows only when you want to see them. * Unlike other popup blockers StopPop.net only runs when you surf * Let's face it some web sites have valid popups you need to see, StopPop.net allows you to graphically select popups you do want to see from the slide out menu window * Two clicks to use 90% of all features. * Have the option to play a non-intrusive sound when a popup is blocked * Set up StopPop.net to always allows pop ups from secure sites. * Manage your blocked sites, allowed sites and domains all in a single interface or manually with a click while you surf.